TEXTURAL CHRACTERISTICS AND DISTRIBUTION OF SEDIMENTS IN GUNDARU RESERVOIR, TIRUNELVELI DISTRICT, TAMIL NADU

  • Unique Paper ID: 155501
  • Volume: 8
  • Issue: 9
  • PageNo: 750-754
  • Abstract:
  • Sediments carried into a reservoir may deposit throughout its full length, thus gradually raising the bed elevation and causing aggradations. To address this,a detailed investigation carried out on sedimentation process and sediment characteristic studies of reservoir sediments. The present study focused to understand the size distribution and textural characteristics of sediments in a reservoir site and to understand the sedimentation model of the reservoir. The study area Gundaru Reservior is Located (N 8 ͦ 56’ 55”, E 77 ͦ 13’ 14”) at the foot of the Western Ghats. Three types of sampling have been done for this proposed study. Granule sediments were collected along the upstream channel in the reservoir site. Sand sized sediments collected along the periphery of the reservoir and finer materials were collected at the centre part. Textural studies including pebble size analysis, sieving analysis for sand sized sediments and wet sieving analysis for finer material were done. Pebble analysis revels that the samples are spherical in nature and are transported by rolling mode of transportation.Heavy mineral assemblage of the Gundaru reservoir sand is suggestive of their derivation from the rock type of the regions such as gneiss, charnockite gneiss and charnockite, garnet biotite gneiss belonging to Archean Complex.

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